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Cheap Flights from Colombo to Samui International

Compare Colombo to Samui International flight deals

Find the cheapest month or even day of the year to fly to Samui International

Book the best Samui International fare with no extra fees

Flight deals from Colombo to Samui International

Looking for a cheap last-minute deal or the best return flight from Colombo to Samui International? Find the lowest prices on one-way and return tickets right here.
Koh Samui.R 3,957 per passenger.Departing Mon, 17 Nov.One-way flight with AirAsia.Outbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Mon, 17 Nov, arriving in Samui International.Price includes taxes and charges.From R 3,957, select.
Koh Samui.R 4,140 per passenger.Departing Thu, 22 Jan.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Colombo Bandaranayake on Thu, 22 Jan, arriving in Samui International.Price includes taxes and charges.From R 4,140, select.
Koh Samui.R 4,247 per passenger.Departing Sat, 14 Mar.One-way flight with AirAsia.Outbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Sat, 14 Mar, arriving in Samui International.Price includes taxes and charges.From R 4,247, select.
Koh Samui.R 4,281 per passenger.Departing Sun, 23 Aug.One-way flight with AirAsia.Outbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Sun, 23 Aug, arriving in Samui International.Price includes taxes and charges.From R 4,281, select.
Koh Samui.R 4,553 per passenger.Departing Thu, 4 Dec.One-way flight with AirAsia.Outbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Thu, 4 Dec, arriving in Samui International.Price includes taxes and charges.From R 4,553, select.
Koh Samui.R 4,567 per passenger.Departing Sun, 8 Feb.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Colombo Bandaranayake on Sun, 8 Feb, arriving in Samui International.Price includes taxes and charges.From R 4,567, select.
Koh Samui.R 4,864 per passenger.Departing Thu, 7 May.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Colombo Bandaranayake on Thu, 7 May, arriving in Samui International.Price includes taxes and charges.From R 4,864, select.
Koh Samui.R 5,004 per passenger.Departing Tue, 28 Oct.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Colombo Bandaranayake on Tue, 28 Oct, arriving in Samui International.Price includes taxes and charges.From R 5,004, select.

Find the cheapest month to fly from Colombo to Samui International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Colombo to Samui International flights are currently cheapest in November.
Oct
from R 5,004
Nov
from R 3,957
Dec
from R 4,553
Jan
from R 4,140
Feb
from R 4,567
Mar
from R 4,247
Apr
Find prices
May
from R 4,864
Jun
Find prices
Jul
from R 7,843
Aug
from R 4,281
Sep
from R 5,478

Colombo to Samui International: Alternative routes

Compare routes from Colombo to Koh Samui below. You may find an airport to fly into that's cheaper, faster, or easier than Samui International.

Colombo to Koh Samui: Flight information

The things to know before you go.
Cheapest flight foundR 3,957
Cheapest month to flyNovember

Finding cheap flights from Colombo to Samui International: Frequently asked questions

The best price we found for a return flight from Colombo to Samui International is R 8,709. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Colombo to Samui International. But we found flights with one stop from R 8,709.
As of October 2025, there are no flights flying from Colombo to Samui International.
The cheapest month to fly from Colombo to Samui International is usually October.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Colombo to Samui International Airport on Monday, 27 October 2025.
No airlines currently offer direct flights between Colombo and Samui International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Samui International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Koh Samui is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Samui International is Thai AirAsia .

Travelling from Colombo to Koh Samui Airport (USM): What you need to know

  • Colombo's main base, Bandaranaike International Airport (CMB), is where many unforgettable trips begin. Explore your departure options from here for your flight from Colombo to Koh Samui Airport (USM).

  • The timezone in Koh Samui is UTC+7, which is one hour 30 minutes ahead of Colombo. Koh Samui Airport is located in Koh Samui.

  • For hassle-free travel, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This will give you enough time to board your flight from Colombo to USM.

  • In peak travel periods, allow for extended wait times and arrive earlier. Aim for at least two hours ahead for domestic flights and up to four hours for international journeys.

Airports in Colombo

Colombo Ratmalana Airport (RML)

  • Located around 16 kilometres from the centre of Colombo, RML can be reached in about 40 minutes by car (depending on traffic). The journey on public transport takes roughly 1 hour 15 minutes.

  • Catching an early flight from Colombo to Koh Samui Airport? Avoid the last-minute rush to the terminal (and get a little more snooze time) by choosing one of these stays near Colombo Ratmalana Airport:

Bandaranaike International Airport (CMB)

  • Knock a new city off your list or just take some time to unwind with a stopover. If you'd like to split up your flight from Colombo to Koh Samui Airport, here's where you can stop when setting off from Bandaranaike International Airport:

    • Suvarnabhumi Airport (BKK)

    • Changi International Airport (SIN)

    • Hong Kong International Airport (HKG)

  • CMB is about 32 kilometres from central Colombo. It'll take 40 minutes or so to get to the airport in a car from the city centre. Public transport takes approximately 1 hour 30 minutes.

  • Kick off your holiday early with an extra night away from home. Before catching your Colombo to USM flight, stay in one of these hotels close to Bandaranaike International Airport:

  • 75.71% of flights out of Bandaranaike International Airport arrive within the expected time frame.

About Koh Samui Airport (USM)

  • If you're arriving on a late flight from Colombo to Koh Samui Airport, few things top the convenience of staying near the terminal. Pick up your bags from the carousel and then be showered and snoozing soon after at one of these options near USM:

  • Grab a Koh Samui Airport rental car and discover Koh Samui and beyond with your own set of wheels. Asap car hire, Hertz and Drive Car Hire are top outlets you can book with here.

  • Booking your ride around four weeks ahead of your Colombo to Koh Samui Airport flight can help you lock in a great deal.

How to find the cheapest flights from Colombo to Koh Samui Airport (USM)

  • Right now, R 3,957 is the lowest price we've found for a one-way ticket from Colombo to Koh Samui Airport. The cheapest price for a return flight is R 8,709. Remember fares may change due to availability at the time of booking.

  • Don't wait until the last minute. You're more likely to walk away with cheap flights from Colombo to USM if you book ahead. Airlines often have some amazing early bird rates.

  • Affordable Colombo to Koh Samui Airport tickets are easier to find if you're not locked into specific dates. Use the 'Whole month' search function to compare fares across the month and then choose the cheapest day.

  • There's no need to check every day to find out if prices have dropped when you set up a Price Alert. We'll let you know the moment there's a better deal on plane tickets from Colombo to USM.

  • Filters make it easier to snap up a deal on your flight from Colombo to Koh Samui Airport. Pick the departure times, carriers and stops that make sense for you. Then sort the results by 'Cheapest' to zero in on the cheapest fare fast.

Explore more of Thailand

  • Nakhon Si Thammarat is just one of the many cities in Thailand waiting to be discovered once you've taken in the sights of Koh Samui. Around 129 kilometres away to the south, its top attractions include Wat Phra Phrom, Wat Pho Sadet and Wat Yai Chai Mongkol.

  • Around 257 kilometres south-west of Koh Samui, Phuket is another essential stop in Thailand. Experience major highlights starting with V.MarineTour- Phi Phi Islands Day Trip - Private Boat Charters, Sunrise Beach and Paradise Beach.

Plan the rest of your trip from Colombo to Koh Samui

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.